4D NetKit: Secure OpenID Authentication with nonce attribute
When working with modern authentication flows, security is paramount. Developers often need to integrate authentication with trusted identity providers such as Google or Microsoft. This is where OpenID Connect (OIDC) comes into play.
OIDC is an identity layer built on top of OAuth 2.0. It allows your application to verify the identity of a user and to obtain basic profile information in a secure way. Starting with the latest enhancements to the cs.NetKit.OAuth2Provider class, 4D 21 now makes it easier to work with OpenID Connect by supporting the nonce parameter, along with new token attributes, including the id_token.
Trim, Trim start, and Trim end in 4D
When working with user input, data cleaning, or text formatting, one of the most common tasks is removing unwanted whitespace. Whether it’s a space accidentally typed before an email address or a newline character left at the end of a copy-paste, these seemingly invisible characters can cause unexpected behavior in your applications.
Fortunately, 4D 21 provides easy-to-use string methods to help: Trim, Trim start, Trim end.
4D NetKit: Decoding, Generating, and Validating JWT
JSON Web Tokens (JWT) have become a key standard for secure authentication and information exchange between systems. With JWT, you can transmit data in a secure, verifiable, and standardized way, reducing complexity while improving security. In particular, JWTs are essential when working with OpenID Connect, where they allow you to validate and decode the information returned by the OpenID provider.
Within the 4D 21, 4D NetKit provides a simple API to handle these tokens: decoding, generation, and validation.
Convert Numbers with Ease: Enhanced String and Num Commands
When working with different numeric bases, such as binary or hexadecimal, converting between numbers and strings is a common task. With 4D 21, the String and Num commands have been enhanced to make these conversions more powerful.
4D AIKit: Structured Outputs
When using AI in your application, you often need outputs that your code can parse, not just free-form text. Whether you’re generating data for a user interface, automating business logic, or orchestrating multi-step reasoning, predictable, machine-readable responses are essential.
That’s why 4D 21’s 4D AIKit introduces the new response_format attribute, letting you define the exact structure of the model’s output to ensure consistency, validation, and smooth integration into your app logic.
Edit and Manage Component Code Directly in the host project from the 4D Explorer
In 4D 20 R9, we introduced the ability to edit and debug component methods and classes directly from a host project. Start with 4D 21, we’re now going further by making 4D Explorer the central hub for editing both project and component code. What’s for you: work better, work faster, with your components.
4D NetKit: Simplifying OAuth 2.0 Redirects after authentication
4D NetKit just made redirecting users after OAuth 2.0 authentication easier with 4D 21. The OAuth2Provider class in 4D NetKit now allows real URLs for authenticationPage and authenticationErrorPage. This means you now have more redirection options after authentication, like a Qodly pages or HTTP Handlers. Whether the authentication succeeds or fails, you stay in control of the user experience with smooth, flexible redirection options.
Semantic search: querying by vector similarity
With the growing importance of vector-based search in AI applications such as semantic search, recommendation engines, and natural language processing, 4D introduces native support for vector queries in the query() function. This enhancement brings vector similarity comparisons directly into the language of DataClass.query() and EntitySelection.query().
Take Control of Standard 4D Components
As a 4D developer, you often want full control over what gets included in your projects. Starting with 4D 21, you can now decide which components provided by 4D are part of your application.
4D 21 and AI Kit: Redefining how applications Think and Act
With 4D 21, AI takes a giant leap forward. At the heart of this evolution is AI Kit’s tool calling, a massive addition that transforms the way you integrate AI into your applications.
Tool calling allows you to extend the model’s capabilities by registering your own methods or functions, which the AI can call automatically when relevant. This means that instead of manually handling every interaction, the chat helper automatically invokes your handlers, giving you both flexibility and control.
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